Automated quantification of ultrasonic fatty liver texture based on curvelet transform and SVD

Bharath, R and Mishra, Pradeep Kumar and P, Rajalakshmi (2018) Automated quantification of ultrasonic fatty liver texture based on curvelet transform and SVD. Biocybernetics and Biomedical Engineering, 38 (1). pp. 145-157. ISSN 0208-5216

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Fatty liver is a prevalent disease and is the major cause for the dysfunction of the liver. If fatty liver is untreated, it may progress into chronic diseases like cirrhosis, hepatocellular carcinoma, liver cancer, etc. Early and accurate detection of fatty liver is crucial to prevent the fatty liver progressing into chronic diseases. Based on the severity of fat, the liver is categorized into four classes, namely Normal, Grade I, Grade II and Grade III respectively. Ultrasound scanning is the widely used imaging modality for diagnosing the fatty liver. The ultrasonic texture of liver parenchyma is specific to the severity of fat present in the liver and hence we formulated the quantification of fatty liver as a texture discrimination problem. In this paper, we propose a novel algorithm to discriminate the texture of fatty liver based on curvelet transform and SVD. Initially, the texture image is decomposed into sub-band images with curvelet transform enhancing gradients and curves in the texture, then an absolute mean of the singular values are extracted from each curvelet decomposed image, and used it as a feature representation for the texture. Finally, a cubic SVM classifier is used to classify the texture based on the extracted features. Tested on a database of 1000 image textures with 250 image textures belonging to each class, the proposed algorithm gave an accuracy of 96.9% in classifying the four grades of fat in the liver.

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IITH Creators:
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Item Type: Article
Additional Information: The authors are immensely thankful to Dr. M A Mateen, Radiologist, Asian Institute of Gastroenterology, Hyderabad, India, and his team for their consistent support in providing the database.
Uncontrolled Keywords: Fatty liver, Curvelet transform, SVD, Texture features, SVM Computer aided diagnosis
Subjects: Electrical Engineering
Divisions: Department of Electrical Engineering
Depositing User: Team Library
Date Deposited: 22 Jan 2018 04:26
Last Modified: 22 Jan 2018 04:26
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